The flag was added because Apple clang and Chromium clang disagreed
for certain versions of instructions.
qsubaddx, qaddsubx, ldrneb and ldrneh were used in armv6 assembly
which was removed in d55724fae9cb27e070add7952394fc0427ef2061
vqshrun was used in some neon assembly but superseded by
dcbfacbb984cdcd5b5a5030103305fa3669dfece
.include was used for obj_int_extract/asm_offsets and removed in
6eec73a747f3d14d327cdc33279de96d0deb48c8
Change-Id: I32f4c9b536d0318482101c0b8e91e42b8f545f18
1b982cc64f